EP3981769A1 - Composé de pyrrolopyrimidine et son utilisation - Google Patents
Composé de pyrrolopyrimidine et son utilisation Download PDFInfo
- Publication number
- EP3981769A1 EP3981769A1 EP20817895.4A EP20817895A EP3981769A1 EP 3981769 A1 EP3981769 A1 EP 3981769A1 EP 20817895 A EP20817895 A EP 20817895A EP 3981769 A1 EP3981769 A1 EP 3981769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compound
- acid
- isomer
- pharmaceutically acceptable
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000003285 pharmacodynamic effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000036470 plasma concentration Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000008741 proinflammatory signaling process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- YORCIIVHUBAYBQ-UHFFFAOYSA-N propargyl bromide Chemical compound BrCC#C YORCIIVHUBAYBQ-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000006340 racemization Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 102200087780 rs77375493 Human genes 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 208000002491 severe combined immunodeficiency Diseases 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910001958 silver carbonate Inorganic materials 0.000 description 1
- LKZMBDSASOBTPN-UHFFFAOYSA-L silver carbonate Substances [Ag].[O-]C([O-])=O LKZMBDSASOBTPN-UHFFFAOYSA-L 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 230000009870 specific binding Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000003419 tautomerization reaction Methods 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- JHLVEBNWCCKSGY-UHFFFAOYSA-N tert-butyl n-methylcarbamate Chemical compound CNC(=O)OC(C)(C)C JHLVEBNWCCKSGY-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- 230000002103 transcriptional effect Effects 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- 125000004044 trifluoroacetyl group Chemical group FC(C(=O)*)(F)F 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 1
- 150000003668 tyrosines Chemical class 0.000 description 1
- 125000001493 tyrosinyl group Chemical group [H]OC1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])(N([H])[H])C(*)=O 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5365—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines ortho- or peri-condensed with heterocyclic ring systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D498/04—Ortho-condensed systems
Definitions
- the present disclosure relates to a pyrrolopyrimidine compound as a JAK inhibitor and use thereof in preparing a medicament for treating a JAK1- or/and JAK2-related disease, and in particular, to a compound represented by formula (I), an isomer thereof or a pharmaceutically acceptable salt thereof.
- Janus kinases are a group of cytoplasmic tyrosine kinases that transmit cytokine signals from membrane receptors to STAT transcription factors.
- the JAK family includes four members, JAK1, JAK2, JAK3 and TYK2.
- the JAK-STAT pathway transmits extracellular signals from a variety of cytokines, growth factors and hormones to the nucleus and is responsible for the expression of thousands of protein-coding genes.
- the JAK-STAT pathway converting extracellular signals into transcriptional responses involves several steps: 1) The conformation of the cytokine receptors on the cell surface changes when they binds to their corresponding cytokine ligands, causing dimerization of the receptor molecules; the receptor-coupled JAK kinases are brought into close proximity with the dimerized receptors and activated through reciprocal tyrosine phosphorylation. 2) The activated JAKs catalyze the phosphorylation of tyrosine residues on the receptors; then the phosphorylated tyrosines and surrounding amino acid sequences form a docking site, and STAT proteins containing an SH2 domain are recruited to the docking site.
- JAK kinases catalyze the phosphorylation of STAT proteins bound to the receptors; the activated STAT proteins leave the receptors and form dimers, which are then transferred into the nucleus to regulate the transcription of specific genes.
- JAK-STAT intracellular signal transduction serves interferons, most interleukins, and a variety of cytokines and endocrine factors, such as EPO, TPO, GH, OSM, LIF, CNTF, GM-CSF and PRL (Vainchenker W. et at. (2008)).
- JAK-1, JAK-2 and TYK-2 are expressed in various tissue cells in humans, while JAK-3 is mainly expressed in various hematopoietic cells, mainly including bone marrow cells, thymocytes, NK cells, and activated B and T lymphocytes.
- JAK1 can bind to IL-10, IL-19, IL-20, IL-22, IL-26, IL-28, IFN- ⁇ , IFN- ⁇ , IL-6 in the gp130 family, and other receptors containing ⁇ c.
- JAK1 has become a novel target in disease-related fields such as immunity, inflammation and cancer.
- JAK2 plays an important role in the regulation of a variety of receptor signals including EPO, GH, PRL, IFN- ⁇ , and IL-3, IL-5 and GM-CSF in the ⁇ c family.
- a base mutation in the JAK2 gene in humans JAK2 V617F is closely related to the development of polycythemia vera (PV), essential thrombocythemia (ET), idiopathic myelofibrosis (IMF), chronic myelogenous leukemia (CML), and the like in myeloproliferative diseases.
- JAK3 regulates cell signaling by binding to the common ⁇ -chain ( ⁇ c) in cytokine receptor complexes such as IL-2, IL-4, IL-7, IL-9, IL-15 and IL-21.
- ⁇ c common ⁇ -chain
- cytokine receptor complexes such as IL-2, IL-4, IL-7, IL-9, IL-15 and IL-21.
- Either JAK3 or ⁇ c mutations can cause severe combined immunodeficiency.
- Abnormal JAK3 activity manifests as remarkable decreases in T cells and NK cells and loss of B cell function, and may seriously affect normal biological functions of the immune system and the like. Based on its functional characteristics and special tissue distribution, JAK3 has become an attractive therapeutic target for immune system-related diseases.
- TYK2 is the 1 st member of the JAK family, which can be activated by a variety of receptors including IFNs, IL-10, IL-6, IL-12, IL-23 and IL-27.
- IFNs IFNs
- IL-10 interleukin-10
- IL-6 interleukin-6
- IL-12 interleukin-12
- IL-23 interleukin-23
- the IL-2 or IL-4 receptor along with the common ⁇ chain, binds to JAK1 and JAK3, while the type I receptor having the same ⁇ chain binds to JAK2.
- the type I receptor using gp130 (glycoprotein 130) and the type I receptor activated by heterodimeric cytokines preferentially bind to JAK1/2 and TYK2.
- the type I receptor activated by hormone-like cytokines binds to and activates JAK2 kinase.
- the type II receptor for interferon binds to JAK1 and TYK2, while the receptor for the IL-10 cytokine family binds to JAK1/2 and TYK2.
- JAK1 and/or other JAKs The specific bindings of the above cytokines and their receptors to JAK family members trigger different physiological effects, providing the possibility for the treatment of different diseases.
- Heterodimerization of JAK1 with other JAKs transduces cytokine-driven pro-inflammatory signaling. Therefore, inhibition of JAK1 and/or other JAKs is expected to have therapeutic benefit for a range of inflammatory conditions and other diseases driven by JAK-mediated signal transduction ( Daniella M. Schwartz, 2017, Nature Reviews Drug Discovery 16, 843-862 .)
- the present invention provides a compound represented by formula (I), an isomer thereof or a pharmaceutically acceptable salt thereof,
- R 1 is H or CH 3 ; the other variables are as defined herein.
- R 2 is H or CH 3 ; the other variables are as defined herein.
- R 3 is selected from H, F, Cl, Br, I and CN; the other variables are as defined herein.
- R 3 is selected from CN.
- the compound is selected from:
- R 1 , R 2 and R 3 are as defined herein.
- the present invention further provides a compound of the following formulas, an isomer thereof or a pharmaceutically acceptable salt thereof:
- the compound, the isomer thereof or the pharmaceutically acceptable salt thereof is selected from:
- the present invention also provides use of the compound or the pharmaceutically acceptable salt thereof in preparing a medicament for treating a JAK1- or/and JAK2-related disease.
- the medicament is a medicament for treating rheumatoid arthritis.
- the compound disclosed herein exhibits good selective inhibition against JAK1 and/or JAK2 in in vitro activity assay of 4 kinase subtypes JAK1, JAK2, JAK3 and TYK2; the compound has good permeability, and is favorable for realizing desirable target tissue concentration and oral bioavailability; the compound disclosed herein has good oral bioavailability and high exposure in mice, and is beneficial for generating good in vivo efficacy.
- pharmaceutically acceptable is used herein for those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problems or complications, and commensurate with a reasonable benefit/risk ratio.
- pharmaceutically acceptable salt refers to a salt of the compound disclosed herein, which is prepared from the compound having particular substituents disclosed herein and a relatively nontoxic acid or base.
- a base addition salt can be obtained by contacting such a compound with a sufficient amount of a base in a pure solution or a suitable inert solvent.
- Pharmaceutically acceptable base addition salts include sodium, potassium, calcium, ammonium, organic amine, or magnesium salts, or similar salts.
- an acid addition salt can be obtained by contacting such a compound with a sufficient amount of an acid in a pure solution or a suitable inert solvent.
- Examples of pharmaceutically acceptable acid addition salts include salts derived from inorganic acids, such as hydrochloric acid, hydrobromic acid, nitric acid, carbonic acid, bicarbonate radical, phosphoric acid, monohydrogen phosphate, dihydrogen phosphate, sulfuric acid, hydrogen sulfate, hydroiodic acid and phosphorous acid; and salts derived from organic acids, such as acetic acid, propionic acid, isobutyric acid, maleic acid, malonic acid, benzoic acid, succinic acid, suberic acid, fumaric acid, lactic acid, mandelic acid, phthalic acid, benzenesulfonic acid, p -toluenesulfonic acid, citric acid, tartaric acid and methanesulfonic acid. Also included are salts of amino acids (e.g., arginine) and salts of organic acids such as glucuronic acid. Certain specific compounds disclosed herein contain both basic and acidic functional groups that allow the compounds to
- the pharmaceutically acceptable salts disclosed herein can be synthesized from a parent compound having an acidic or basic group by conventional chemical methods.
- such salts are prepared by the following method: performing a reaction of the free acid or base form of the compound and a stoichiometric amount of an appropriate base or acid in water or an organic solvent or a mixture thereof.
- the compound disclosed herein may have a specific geometric or stereoisomeric form. All such compounds are contemplated herein, including cis and trans isomers, (-)- and (+)-enantiomers, (R)- and (S)-enantiomers, diastereoisomers, (D)-isomers, (L)-isomers, and racemic mixtures and other mixtures thereof, such as an enantiomer or diastereomer enriched mixture, all of which are encompassed within the scope of the present invention. Substituents such as alkyl may have an additional asymmetric carbon atom. All these isomers and mixtures thereof are encompassed within the scope of the present invention.
- enantiomer or “optical isomer” refers to stereoisomers that are mirror images of each other.
- cis-trans isomer or "geometric isomer” results from the inability of a single bond of a ring carbon atom or a double bond to rotate freely.
- diastereoisomer refers to stereoisomers in which molecules each have two or more chiral centers and are not mirror images of each other.
- the absolute configuration of a stereogenic center is represented by a wedged solid bond ( ) and a wedged dashed bond ( )
- the relative configuration of a stereogenic center is represented by a straight solid bond ( ) and a straight dashed bond ( ).
- a wavy line ( ) represents a wedged solid bond ( ) or a wedged dashed bond ( )
- a wavy line ( ) represents a straight solid bond ( ) and a straight dashed bond ( ).
- formula (A) represents that the compound exists in the form of a single isomer of formula (A-1) or formula (A-2) or in the form of a mixture of both isomers of formula (A-1) and formula (A-2);
- formula (B) represents that the compound exists in the form of a single isomer of formula (B-1) or formula (B-2) or in the form of a mixture of both isomers of formula (B-1) and formula (B-2);
- formula (C) represents that the compound exists in the form of a single isomer of formula (C-1) or formula (C-2) or in the form of a mixture of both isomers of formula (C-1) and formula (C-2).
- tautomer or “tautomeric form” means that different functional isomers are in dynamic equilibrium at room temperature and can be rapidly converted into each other. If tautomers are possible (e.g., in solution), the chemical equilibrium of the tautomers can be achieved.
- a proton tautomer also known as a prototropic tautomer, includes interconversion by proton migration, such as keto-enol isomerism and imine-enamine isomerism.
- a valence isomer includes interconversion by recombination of some bonding electrons.
- a specific example of the keto-enol tautomerism is the interconversion between the tautomers pentane-2,4-dione and 4-hydroxypent-3-en-2-one.
- enriched with one isomer means that the content of one of the isomers or enantiomers is less than 100% and more than or equal to 60%, 70%, 80%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.6%, 99.7%, 99.8%, or 99.9%.
- isomeric excess or “enantiomeric excess” refers to the difference between the relative percentages of two isomers or enantiomers. For example, if the content of one isomer or enantiomer is 90% and the content of the other isomer or enantiomer is 10%, the isomeric or enantiomeric excess (ee) is 80%.
- Optically active (R)- and (S)-isomers and D and L isomers can be prepared by chiral synthesis or chiral reagents or other conventional techniques. If one enantiomer of a certain compound disclosed herein is to be obtained, the desired pure enantiomer can be prepared by asymmetric synthesis or derivatization using a chiral auxiliary, wherein the resulting diastereoisomeric mixture is separated and the auxiliary group is cleaved.
- the compound when the molecule contains a basic functional group (such as amino) or an acidic functional group (such as carboxyl), the compound reacts with an appropriate optically active acid or base to form a salt of the diastereoisomer, which is then subjected to diastereoisomeric resolution through conventional methods in the art to get the pure enantiomer.
- the enantiomer and the diastereoisomer are generally isolated through chromatography using a chiral stationary phase, optionally in combination with chemical derivatization (e.g., carbamate generated from amines).
- the compound disclosed herein may contain an unnatural proportion of atomic isotope at one or more of the atoms that constitute the compound.
- the compound may be labeled with a radioisotope, such as tritium ( 3 H), iodine-125 ( 125 I), or C-14 ( 14 C).
- a radioisotope such as tritium ( 3 H), iodine-125 ( 125 I), or C-14 ( 14 C).
- hydrogen can be substituted by deuterium to form a deuterated drug, and the bond formed by deuterium and carbon is firmer than that formed by common hydrogen and carbon.
- the deuterated drug Compared with an un-deuterated drug, the deuterated drug has the advantages of reduced toxic side effect, increased stability, enhanced efficacy, prolonged biological half-life and the like.
- substituted means that one or more hydrogen atoms on a specific atom are substituted by substituents which may include deuterium and hydrogen variants, as long as the valence of the specific atom is normal and the substituted compound is stable.
- substituents which may include deuterium and hydrogen variants, as long as the valence of the specific atom is normal and the substituted compound is stable.
- substitution with oxygen does not occur on aromatic groups.
- optionally substituted means that an atom can be substituted with a substituent or not. Unless otherwise specified, the type and number of the substituent may be arbitrary as long as being chemically achievable.
- variable e.g., R
- the variable is independently defined in each case.
- the group can be optionally substituted with up to two R, and the definition of R in each case is independent.
- a combination of a substituent and/or a variant thereof is permissible only if the combination can result in a stable compound.
- linking group When the number of a linking group is 0, for example, -(CRR) 0 -, it means that the linking group is a single bond.
- substituent When a substituent is absent, it means that the substituent does not exist. For example, when X in A-X is absent, the structure is actually A. When it is not specified by which atom the listed substituent is connected to the group to be substituted, the substituent can be connected via any atom of the group. For example, pyridinyl as a substituent can be connected to the group to be substituted via any carbon atom on the pyridine ring.
- any one or more of the sites of the group may be connected to other groups by chemical bonds.
- the number of the H atoms at the connectable site is correspondingly reduced based on the number of the connected chemical bonds, and a group with a corresponding valence number is thus formed.
- the chemical bond that connects the site to another group may be represented by a straight solid bond ( ), a straight dashed line bond ( ), or a wavy line
- the straight solid bond in -OCH3 refers to being connected to another group via the oxygen atom in the group
- the straight dashed bond in refers to being connected to another group via two ends of the nitrogen atom in the group
- the wavy line in refers to being connected to another group via the carbon atoms at positions 1 and 2 in the phenyl group
- C 1-3 alkyl refers to a linear or branched saturated hydrocarbon group consisting of 1 to 3 carbon atoms.
- C 1-3 alkyl includes, but is not limited to, C 1-2 and C 2-3 alkyl, etc., and may be monovalent (e.g., methyl), divalent (e.g., methylene), or polyvalent (e.g., methenyl).
- Examples of C 1-3 alkyl include, but are not limited to, methyl (Me), ethyl (Et), and propyl (including n-propyl and isopropyl).
- halo or halogen, by itself or as part of another substituent, refers to a fluorine, chlorine, bromine or iodine atom.
- C n-n+m or Cn-Cn+m includes any one of the specific cases of n to n+m carbon atoms.
- C 1-12 includes C 1 , C 2 , C 3 , C 4 , C 5 , C 6 , C 7 , C 8 , C 9 , C 10 , C 11 and C 12 .
- any range within n to n+m may be included.
- C 1-12 includes C 1-3 , C 1-6 , C 1-9 , C 3-6 , C 3-9 , C 3-12 , C 6-9 , C 6-12 and C 9-12 .
- n-n+m membered represents that the number of atoms on the ring is n to n+m.
- 3-12 membered ring includes 3 membered ring, 4 membered ring, 5 membered ring, 6 membered ring, 7 membered ring, 8 membered ring, 9 membered ring, 10 membered ring, 11 membered ring and 12 membered ring.
- n-n+m membered also represents any range within n to n+m.
- 3-12 membered ring includes 3-6 membered ring, 3-9 membered ring, 5-6 membered ring, 5-7 membered ring, 6-7 membered ring, 6-8 membered ring, and 6-10 membered ring.
- leaving group refers to a functional group or atom that can be replaced by another functional group or atom through a substitution reaction (e.g., nucleophilic substitution).
- representative leaving groups include triflate; chlorine, bromine and iodine; sulfonate groups, such as mesylate, tosylate, p-bromobenzenesulfonate, and p- toluenesulfonate; and acyloxy groups, such as acetoxy and trifluoroacetoxy.
- protecting group includes, but is not limited to,” amino protecting group", “hydroxy protecting group” or “sulfydryl protecting group”.
- amino protecting group refers to a protecting group suitable for preventing side reactions at the nitrogen atom of the amino.
- Representative amino protecting groups include, but are not limited to: formyl; acyl, such as alkanoyl (such as acetyl, trichloroacetyl or trifluoroacetyl); alkoxycarbonyl, such as t-butoxycarbonyl (Boc); arylmethyloxycarbonyl, such as benzyloxycarbonyl (Cbz) and 9-fluorenylmethyloxycarbonyl (Fmoc); arylmethyl, such as benzyl (Bn), trityl (Tr), 1,1-di-(4'-methoxyphenyl)methyl; and silyl, such as trimethylsilyl (TMS) and t -butyldimethylsilyl (TBS).
- alkanoyl such as acetyl, trichloroacetyl or trifluoroacetyl
- alkoxycarbonyl such as t-butoxycarbonyl (Boc)
- hydroxy protecting group refers to a protecting group suitable for preventing side reactions of the hydroxyl group.
- Representative hydroxy protecting groups include, but are not limited to: alkyl, such as methyl, ethyl, and t -butyl; acyl, such as alkanoyl (such as acetyl); arylmethyl, such as benzyl (Bn), p-methoxybenzyl (PMB), 9-fluorenylmethyl (Fm) and diphenylmethyl (DPM); and silyl, such as trimethylsilyl (TMS) and t -butyldimethylsilyl (TBS).
- alkyl such as methyl, ethyl, and t -butyl
- acyl such as alkanoyl (such as acetyl)
- arylmethyl such as benzyl (Bn), p-methoxybenzyl (PMB), 9-fluorenylmethyl (Fm) and
- the compounds of the present invention can be prepared by a variety of synthetic methods well known to those skilled in the art, including the specific embodiments listed below, embodiments formed by combinations thereof with other chemical synthetic methods, and equivalents thereof known to those skilled in the art. Preferred embodiments include, but are not limited to, the examples disclosed herein.
- aq represents aqueous
- DMF represents N , N -dimethylformamide.
- Step 1 (4-Methoxyphenyl)methanol (50 g, 361.89 mmol, 45.05 mL, 1 eq ) was added to a suspension of sodium hydride (15.92 g, 398.08 mmol, 60% purity, 1.1 eq ) in DMF (500 mL) at 0 °C.
- the reaction mixture was stirring for 0.5 h before 3-bromoprop-1-yne (59.19 g, 398.08 mmol, 42.89 mL, 1.1 eq) was added slowly.
- the resulting solution was stirred at 0 °C for 2.5 h and at 25 °C for 16 h.
- Step 2 Compound 1-2 (34.14 g, 193.74 mmol, 25.00 mL, 1.1 eq), cuprous iodide (3.35 g, 17.61 mmol, 0.1 eq), piperidine (44.99 g, 528.37 mmol, 52.18 mL, 3 eq ) and bis(triphenylphosphine)palladium(II) dichloride (6.18 g, 8.81 mmol, 0.05 eq ) were added to a solution of 5-bromo-2-iodo-pyridine (50 g, 176.12 mmol, 1 eq ) in THF (500 mL) at 25 °C.
- reaction system was purged with nitrogen three times, and the resulting solution was stirred at 25 °C for 16 h.
- the reaction solution was filtered through celite and the filtrate was concentrated at reduced pressure.
- the residue was dissolved in 800 mL of ethyl acetate, and sequentially washed with 300 mL of water and 300 mL of brine.
- the organic phase was dried over anhydrous sodium sulfate, filtered and concentrated at reduced pressure.
- Step 4 Silver carbonate (10.07 g, 36.53 mmol, 1.66 mL, 2 eq) was added to a solution of compound 1-4 (10 g, 18.27 mmol, 1 eq ) in DMF (160 mL) at 25 °C. The resulting solution was stirred at 40 °C for 16 h. LCMS showed that the reaction was completed and a new main product was formed. The reaction solution was filtered through celite and the filtrate was concentrated at reduced pressure. The residue was dissolved in 200 mL of ethyl acetate, and sequentially washed with 100 mL of water and 100 mL of brine. The organic phase was dried over anhydrous sodium sulfate, filtered and concentrated at reduced pressure.
- Step 5 Cesium carbonate (8.82 g, 27.07 mmol, 2 eq ) , 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (783.26 mg, 1.35 mmol, 0.1 eq ) and tris(dibenzylideneacetone)dipalladium (619.79 mg, 676.83 ⁇ mol, 0.05 eq ) were sequentially added to a solution of compound 1-5 (4.7 g, 13.54 mmol, 1 eq ) and t -butyl N-methylcarbamate (5.33 g, 40.61 mmol, 3 eq) in DME (30 mL) at 25 °C.
- Step 6 Platinum dioxide (933.33 mg, 4.11 mmol, 4.08e-1 eq ) was added to a solution of compounds 1-6 (4 g, 10.06 mmol, 1 eq) in EtOH (60 mL) in nitrogen atmosphere at 25 °C. The reaction system was purged with H2 three times. The resulting solution was stirred in H2 atmosphere at 70 °C (3 MPa) for 72 h. LCMS showed that the reaction was completed and a new main product was formed. The reaction solution was filtered through celite, and the filtrate was concentrated at reduced pressure to obtain compound 1-7.
- Step 7 Trifluoroacetic acid (12.33 g, 108.10 mmol, 8.00 mL, 10.85 eq ) was added to a solution of compound 1-7 (4 g, 9.96 mmol, 1 eq ) in DCM (40 mL) at 0 °C. The resulting solution was stirred at 25 °C for 2 h. LCMS showed that the reaction was completed and a new main product was formed. The solution was concentrated at reduced pressure to obtain compound 1-8. By MS (ESI), the calculation value of C 9 H 15 N 3 O was 181, and measurement value was 182 [M + H]+.
- Step 8 N , N -diisopropylethylamine (9.56 g, 74.00 mmol, 12.89 mL, 7.85 eq ) was added to a solution of 4-chloro-7-( p -toluenesulfonyl)pyrrolo[2,3- d ]pyrimidine (2.9 g, 9.42 mmol, 1 eq ) and compound 1-8 (1.81 g, 9.99 mmol, 1.06 eq ) in DMSO (10 mL) at 25 °C. The resulting solution was stirred at 110 °C for 16 h. LCMS showed that the reaction was completed and a new main product was formed.
- Step 9 Manganese dioxide (5.76 g, 66.29 mmol, 15 eq) was added to a solution of compound 1-9 (2 g, 4.42 mmol, 1 eq) in a mixed solvent of DCM (20 mL) and MeOH (2 mL) at 25 °C. The resulting solution was stirred at 65 °C for 16 h. LCMS showed that the reaction was completed and a new main product was formed. The reaction solution was filtered through celite, and the filtrate was concentrated at reduced pressure to obtain compound 1-10. By MS (ESI), the calculation value of C 22 H 22 N 6 O 3 S was 450, and measurement value was 451 [M + H] + .
- Step 10 A solution of hydroxylamine hydrochloride (370.19 mg, 5.33 mmol, 1.2 eq) and sodium acetate (509.83 mg, 6.22 mmol, 1.4 eq ) in H 2 O (5 mL) was added to a solution of compound 1-10 (2 g, 4.44 mmol, 1 eq ) in EtOH (15 mL) at 25 °C. The resulting solution was stirred at 25 °C for 0.5 h and at 80 °C for 1.5 h. LCMS showed that the reaction was completed and a new main product was formed. The reaction solution was concentrated at reduced pressure. The residue was diluted with 50 mL and extracted with DCM (50 mL ⁇ 3).
- Step 11 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide (9.57 g, 15.04 mmol, 8.94 mL, 50% purity, 5 eq ) was added to a solution of compound 1-11 (1.4 g, 3.01 mmol, 1 eq ) in THF (15 mL) at 25 °C. The system was stirred for 10 min before triethylamine (4.56 g, 45.11 mmol, 6.28 mL, 15 eq) was added. The resulting solution was stirred at 70 °C for 16 h. LCMS showed that the reaction was completed and a new main product was formed.
- Step 12 A solution of tetrabutylammonium fluoride in tetrahydrofuran (1 M, 19.31 mL, 3.2 eq ) was added to a solution of compound 1-12 (2.7 g, 6.03 mmol, 1 eq) in THF (20 mL) at 25 °C. The resulting solution was stirred at 65 °C for 16 h. LCMS showed that the reaction was completed and a new main product was formed. The reaction mixture was concentrated at reduced pressure to remove the solvent. The residue was adjusted to an alkaline pH by adding saturated aqueous sodium bicarbonate solution.
- JAK2, JAK3 and TYK2 dilutions 20 mM 3-( N -morpholino)propanesulfonic acid (MOPS), 1 mM EDTA, 0.01% Brij-35.5% glycerol, 0.1% ⁇ -mercaptoethanol, 1 mg/mL BSA; JAK1 dilution: 20 mM TRIS, 0.2 mM EDTA, 0.1% ⁇ -mercaptoethanol, 0.01% Brij-35.5% glycerol. All compounds were prepared in 100% DMSO and brought to 50 fold the final assay concentration. The test compounds were serially 3-fold diluted to 9 concentrations from 10 ⁇ M to 0.001 ⁇ Mwith DMSO content in the assay reaction being 2%. Working stock solutions of the compounds were added to the assay wells as the first component of the reaction, and then the remaining components were added according to the assay protocol detailed below.
- MOPS N -morpholino)propanesulfonic acid
- JAK1(h) was incubated with 20 mM Tris/HCl pH 7.5, 0.2 mM EDTA, 500 ⁇ M MGEEPLYWSFPAKKK, 10 mM magnesium acetate and [ ⁇ - 33 P]-ATP (activity and concentration were determined as required).
- the reaction was started by adding the Mg/ATP mixture and terminated by adding 0.5% phosphoric acid after 40 min of incubation at room temperature. 10 ⁇ L of the reaction mixture was then added dropwise on a P30 filter pad and washed three times with 0.425% phosphoric acid and once with methanol within 4 minutes, dried and analyzed using a scintillation counter.
- JAK2(h) was incubated with 8 mM MOPS pH 7.0, 0.2 mM EDTA, 100 ⁇ M KTFCGTPEYLAPEVRREPRILSEEEQEMFRDFDYIADWC, 10 mM magnesium acetate and [ ⁇ - 33 P]-ATP (activity and concentration were determined as required).
- the reaction was started by adding the Mg/ATP mixture and terminated by adding 0.5% phosphoric acid after 40 min of incubation at room temperature. 10 ⁇ L of the reaction mixture was then added dropwise on a P30 filter pad and washed three times with 0.425% phosphoric acid and once with methanol within 4 minutes, dried and analyzed using a scintillation counter.
- JAK3(h) was incubated with 8 mM MOPS pH 7.0, 0.2 mM EDTA, 500 ⁇ M GGEEEEYFELVKKKK, 10 mM magnesium acetate and [ ⁇ - 33 P]-ATP (activity and concentration were determined as required).
- the reaction was started by adding the Mg/ATP mixture and terminated by adding 0.5% phosphoric acid after 40 min of incubation at room temperature. 10 ⁇ L of the reaction mixture was then added dropwise on a P30 filter pad and washed three times with 0.425% phosphoric acid and once with methanol within 4 minutes, dried and analyzed using a scintillation counter.
- TYK2(h) was incubated with 8 mM MOPS pH 7.0, 0.2 mM EDTA, 250 ⁇ M GGMEDIYFEFMGGKKK, 10 mM magnesium acetate and [ ⁇ - 33 P]-ATP (activity and concentration were determined as required).
- the reaction was started by adding the Mg/ATP mixture and terminated by adding 0.5% phosphoric acid after 40 min of incubation at room temperature. 10 ⁇ L of the reaction mixture was then added dropwise on a P30 filter pad and washed three times with 0.425% phosphoric acid and once with methanol within 4 minutes, dried and analyzed using a scintillation counter.
- IC 50 results were obtained by XLFIT5 (formula 205) from IDBS corporation, as shown in Table 1. Table 1. Results of in vitro screening for compounds disclosed herein Compounds JAK1 (IC 50 , nM) JAK2 (IC 50 , nM) JAK3 (IC 50 , nM) TYK2 (IC 50 , nM) 1-13 1 8 118 15
- the transport buffer solution was HBSS (Hanks' balanced salt solution) and 10 mM HEPES [ N -(2-hydroxyethyl)piperazine- N' -(2-ethanesulfonic acid)], pH 7.40 ⁇ 0.05; Caco-2 cells were purchased from ATCC.
- Caco-2 cells were seeded at 1 ⁇ 10 5 cells/cm 2 in polyethylene terephthalate (PET) 96-well BD insert plates, and the medium was refreshed every 4-5 days until day 21-28 to form a confluent monolayer.
- Test compounds were tested in a two-way format at 2 ⁇ M in duplicate. Digoxin was added at 10 ⁇ M in the two-way format, and nadolol and metoprolol were added at 2 ⁇ M in the two-way format. Final DMSO concentration was adjusted to less than 1%.
- the plates were incubated in a CO2 incubator at 37 ⁇ 1 °C for 2 h and at 5% CO2 and saturated humidity without shaking.
- the compound has characteristic high permeability, and is favorable for realizing good target tissue concentration and oral bioavailability.
- ND not detectable.
- test results are as follows: Table 3-1. PK study results for compound 1-13 in mice PK parameters Results T 1/2 (hr) 1.89 Cmax (nM) 6000 AUC 0-inf (nM.hr) 12765 Bioavailability (%) a 88.4
- T 1/2 half-life
- Cmax peak concentration
- AUC 0-inf area under the plasma concentration-time curve from time 0 to infinity
- Bioavailability bioavailability.
- the compounds disclosed herein have good oral bioavailability and higher exposure in mice, and are favorable for producing good in-vivo efficacy.
- the compounds disclosed herein were tested for their efficacy on arthritis using a rat adjuvant-induced arthritis model.
- Female, 160-and 180-gram Lewis rats were anesthetized with isoflurane and injected subcutaneously with 0.1 mL of Mycobacterium tuberculosis suspension in the left hind paw.
- the animals were grouped and administered with the compounds 13 days after modeling.
- the rats were given different doses, as shown in Table 4-2.
- the test compound 1-13 was dissolved in a mixed vehicle of [5% DMSO, 95% (12% SBE- ⁇ -CD), 0.5% MC].
- the female Lewis rats were orally administered 2 times daily (8 animals in each group).
- the two treatment groups of compound 1-13 showed significant relieving effect on the weight loss trend of animals caused by disease attack, and the low and medium dose groups (3 mg/kg and 10 mg/kg) showed significant difference since day 20 as compared to the solvent control group, suggesting good weight recovery effect.
- Compound 1-13 inhibited the increase in clinical arthritis score and paw volume, and this inhibition was dose-dependent.
- the effect of compound 1-13 10 mg/kg demonstrated the most significant efficacy (significant difference from the solvent control group starting from day 15).
- the mean clinical arthritis score for this group decreased from 6 points at day 13 to 1.4 points, the study endpoint, on day 27, and was significantly different as compared to the solvent control group.
- Table 4-2. Inhibition on area under the clinical score curve (AUC) Compounds Dosage (mg/kg) AUC (%) Vehicle control group 0 0% Compound 1-13 3 49.6 10 60.5
- compound 1-13 disclosed herein showed significant therapeutic effect (for the inhibition rate versus vehicle control P ⁇ 0.0001) at doses 3 mg/kg and 10 mg/kg, and compound 1-13 disclosed herein showed positive correlation to the dose (3 mg/kg and 10 mg/kg).
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WO2011137022A1 (fr) * | 2010-04-27 | 2011-11-03 | Merck Sharp & Dohme Corp. | Azaindoles comme inhibiteurs de janus kinase |
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